Filterable widget posts rendering

[sternb0t]

It would be handy to allow themes to override the rendering logic for a zone's widget. For example, a theme may want to include special CSS classes, or additional content such as thumbnail images or custom taxonomy. This is one way to implement this. Happy to try a different approach, etc.

[sternb0t]

Thanks, that definitely seems like a better way to do it. Updated.

[jonathanstegall]

This would still be really great to see in this plugin. I came here thinking of doing a PR for this but it's already here.